We can choose the preferred network type of the SIM card, for example, if there is no or very poor reception under 4G/LTE, we can switch to 3G in order to remain reachable.
- Open the Settings
- Tap on SIM cards & mobile networks
- Choose a SIM card (Dual SIM)
- Tap on Preferred network type
- Choose Prefer LTE / 3G or 2G only